公开(公告)号：US08284953B2

公开(公告)日：2012-10-09

申请号：US11873179

申请日：2007-10-16

申请人： Soo-Hyoung Lee ,  Wang-Seup Yeum ,  Yong-Jin Cho ,  In-Bock Lee

发明人： Soo-Hyoung Lee ,  Wang-Seup Yeum ,  Yong-Jin Cho ,  In-Bock Lee

IPC分类号： H04B15/00 ,  H03G11/00 ,  H04R29/00 ,  H02B1/00 ,  H03F1/14 ,  H03F3/38

CPC分类号： H03F3/217 ,  H03F1/305 ,  H03F2200/03 ,  H03F2200/351 ,  H03K17/162

摘要： A circuit of reducing a pop-up noise in a digital amplifier includes a switch unit and a switch signal generator. The switch unit is coupled in parallel to an output load between an output node of the digital amplifier and a reference node. The switch unit controls a current flowing through the output load by forming a conduction path between the output node and the reference node in response to a switch signal. The switch signal generator generates the switch signal in response to a switch control signal indicating a power-on or a power-off. The pop-up noise is reduced by the conduction path that is formed when the digital amplifier is powered on or off.

摘要翻译： 减少数字放大器中的弹出噪声的电路包括开关单元和开关信号发生器。 开关单元与数字放大器的输出节点和参考节点之间的输出负载并联耦合。 开关单元响应于开关信号，在输出节点和参考节点之间形成传导路径来控制流过输出负载的电流。 开关信号发生器响应于指示电源接通或断电的开关控制信号而产生开关信号。 通过在数字放大器通电或关闭时形成的传导路径来减小弹出式噪声。

公开(公告)号：US20080089532A1

公开(公告)日：2008-04-17

申请号：US11873179

申请日：2007-10-16

申请人： Soo-Hyoung Lee ,  Wang-Seup Yeum ,  Yong-Jin Cho ,  In-Bock Lee

发明人： Soo-Hyoung Lee ,  Wang-Seup Yeum ,  Yong-Jin Cho ,  In-Bock Lee

IPC分类号： H04B15/00

CPC分类号： H03F3/217 ,  H03F1/305 ,  H03F2200/03 ,  H03F2200/351 ,  H03K17/162

摘要： A circuit of reducing a pop-up noise in a digital amplifier includes a switch unit and a switch signal generator. The switch unit is coupled in parallel to an output load between an output node of the digital amplifier and a reference node. The switch unit controls a current flowing through the output load by forming a conduction path between the output node and the reference node in response to a switch signal. The switch signal generator generates the switch signal in response to a switch control signal indicating a power-on or a power-off. The pop-up noise is reduced by the conduction path that is formed when the digital amplifier is powered on or off.

摘要翻译： 减少数字放大器中的弹出噪声的电路包括开关单元和开关信号发生器。 开关单元与数字放大器的输出节点与参考节点之间的输出负载并联耦合。 开关单元响应于开关信号，在输出节点和参考节点之间形成传导路径来控制流过输出负载的电流。 开关信号发生器响应于指示电源接通或断电的开关控制信号而产生开关信号。 通过在数字放大器通电或关闭时形成的传导路径来减小弹出式噪声。